Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 337 [Rate centres in NPA 337] [Dial plan for NPA 337]

NXX: 285

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-285 A Kaplan LA LFYTLAMAXEZ  318J COMCAST IP PHONE, LLC 488      
337-285 0 Kaplan LA LFYTLA362MD  5562 METROPCS, INC. 488      
337-285 1 Kaplan LA   150C VOICESTREAM GSM I, LLC 488      
337-285 2 Kaplan LA LFYTLAMAXEZ  318J COMCAST IP PHONE, LLC 488      
337-285 3 Kaplan LA LFYTLA3624Z  490J DISH WIRELESS, LLC 488      
337-285 4 Kaplan LA LFYTLAMAX5X  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 488      
337-285 6 Kaplan LA LFYTLAMAXEZ  318J COMCAST IP PHONE, LLC 488      
337-285 7 Kaplan LA LFYTLAMAX3Y  653C TELEPORT COMMUNICATIONS AMERICA LA - LLC 488      
337-285 8 Kaplan LA   150C VOICESTREAM GSM I, LLC 488      
337-285 9 Kaplan LA   150C VOICESTREAM GSM I, LLC 488      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.